| Callsign | KR4NWN |
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| Radio Service | HA - Amateur |
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| License Status | C - Canceled |
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| Grant Date | 2026-07-25 |
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| Effective Date | 2026-08-31 |
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| Expire Date | 2036-07-25 |
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| Cancel Date | 2026-09-19 |
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| Last Action Date | 2026-09-19 |
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| End Date | 2026-09-19 |
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| Available Date | 2028-09-20 |
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| Applicant Type | I - Individual |
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| Entity Name | Cepeda Rubio, Mario Francisco Jesu |
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| Street Address / Locality | 337 Gwinhurst Rd
Knoxville, TN 379344537 |
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| County | Knox County |
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| Zip Location | 35°51'56.2"N 84°10'43.9"W |
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| Maidenhead | EM75vu |
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| FRN | 0038633830 |
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| Licensee ID/SGIN | L03066483 / 000 |
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| Licensee Class | E - Amateur Extra |
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| Callsign Group | D - 2x3 |
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| ULS/Geo Region | 4 / 4 / TN |
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| Prev Callsign / Prev Class | G - General |
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| Next Callsign | KD0CM |
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| Trustee Callsign / Trustee Name | |
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| Vanity Type | |
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| ULS File Number | 0012170009 |
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| Phonetic weight / Morse weight | 15 / 64 |
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